Oil getting in spark plugs, do i need a head gasket? What is cost of repairs?

Does not sound like a head gasket problem. The issue is more likely to be that the valve cover gasket is worn out and needs replaced. This is the gasket under the cam covers that keeps the oil from getting down to the spark plug wells.

yeap.see answer #1.get the oil out of the plug wells before changing the plugs again.soak it up with a shop rag/rags use a screwdriver to push the rag in there to soak up the oil on the rags..